1. Install the Insert
Push the smaller slanted "nail" piece into the designated cut out of the THMB. Make sure that it sits nice and flush, otherwise it will prevent the frame to successfully attach to your speedloader.
2. Attach the THMB to your Speedloader
Line the hole of the THMB up with the nozzle of your speedloader, then push it down until it sits flush with it. make sure it is secure in place by wiggling it and checking if the "nail" piece is sticking out as visible on the picture above (2).
3. Start loading better.
With your Maraudr Co THMB attached, you will never have to worry about your thumbnails again when loading GBB magazines. Simply use the small triangular piece to pull back the mag follower (while holding the magazine downwards, so that you will be pushing away from you) and start loading!Note:
If you encounter problems loading BBs into your magazine with the "•" variant of the "nail" piece, try the longer "••" or the angled "•••" variant (all 3 are included in your download).